code: def summarize(self, field=None):
      self.summary = {
          "csig": sum([s["csig"] for s in self.scores])
          / len(self.scores),
          "cbak": sum([s["cbak"] for s in self.scores])
          / len(self.scores),
          "covl": sum([s["covl"] for s in self.scores])
          / len(self.scores),
      }
  
      if field is not None:
          return self.summary[field]
      else:
          return self.summary
  
imports: import os
  import sys
  import torch
  import torchaudio
  import logging
  import speechbrain
  from pesq import pesq
  from pystoi import stoi
  from composite_eval import eval_composite
  from hyperpyyaml import load_hyperpyyaml
  from speechbrain.utils.data_utils import undo_padding
  from speechbrain.utils.distributed import run_on_main, if_main_process
label_desc: Use image node_id 1 for calling the CompositeStats obj's underlying member method code with example usage: obj.summarize(field) and returns: self, self